Electron probe microanalysis for calcium content in dentin of deciduous tooth

AIM:To investigate the relationship between the distribution, content of calcium in deciduous dentin and caries susceptibility in children.METHODS:The electron probe microanalysiser (EMPA) was used to analyse the calcium content of lower deciduous central incisous,and to measure the calcium content value of different axial sides and different depth.RESULTS:Calcium content is highest in the labial side and lowest in the mesial side.Calcium content increases gradually from outer zone to inner zone in dentin.There is no statistical difference between caries free group and caries group in calcium content.No correlation is found between calcium content and dftdfsCSI.(CONCLUSION:)Calcium content is not same in different axial sides and different depth; There is no correlation between calcium content and caries susceptibility.